Speaking to journalists on Friday, Putin said the key issues of peace settlement include changes of the Ukrainian constitution, granting special status to Donbas, and amnesty of all the militants. However, the Russian leader said nothing about the full ceasefire, and the withdrawal of Russian troops and weapons from eastern Ukraine.

"Key issues of the implementation of the Minsk agreements are now in the hands of our Kyiv partners, the Kyiv authorities,"Putin was quoted as saying by the Russian TASS news agency.

"We can do nothing without them. We cannot amend the Ukrainian constitution, we cannot enforce the law on special forms of government in certain territories. We cannot sign the law on amnesty for the Ukrainian president," he stated.